3719980781 has 4 divisors (see below), whose sum is σ = 4058160864. Its totient is φ = 3381800700.

The previous prime is 3719980741. The next prime is 3719980807. The reversal of 3719980781 is 1870899173.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3719980781 - 2¹⁸ = 3719718637 is a prime.

It is a super-2 number, since 2×3719980781² = 27676514022018739922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3719980741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169090025 + ... + 169090046.

It is an arithmetic number, because the mean of its divisors is an integer number (1014540216).

Almost surely, 2^3719980781 is an apocalyptic number.

It is an amenable number.

3719980781 is a deficient number, since it is larger than the sum of its proper divisors (338180083).

3719980781 is a wasteful number, since it uses less digits than its factorization.

3719980781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338180082.

The product of its (nonzero) digits is 762048, while the sum is 53.

The square root of 3719980781 is about 60991.6451737449. The cubic root of 3719980781 is about 1549.4595106152.

The spelling of 3719980781 in words is "three billion, seven hundred nineteen million, nine hundred eighty thousand, seven hundred eighty-one".